Spark-discharge lithography plates containing image-support pigm

Details Spark-discharge lithography plates containing image-support pigm Spark-discharge lithography plates containing image-support pigm

1992-06-05

1993-10-05

Burr, Edgar S.

Printing

Planographic

Lithographic printing plates

101467, B41C 110, B41N 100

Patent

active

052495256

ABSTRACT:
A lithographic printing plate that is transformable by spark-discharge techniques so as to change its affinity for ink. The plate features a layered structure including an ink-receptive substrate, a conductive layer and an ink-repellent coating. The ink-repellent coating contains a dispersion of image-support pigments that promote straight-line travel of the spark to the surface of the plate, thereby promoting accurate imaging.

REFERENCES:
patent: 3263604 (1966-08-01), Dalton
patent: 4075029 (1978-02-01), Nuss
patent: 4082902 (1978-04-01), Suzuki et al.
patent: 4202702 (1980-05-01), Nuss
patent: 4836106 (1989-06-01), Afzali-Ardakani et al.
patent: 4911075 (1990-03-01), Lewis et al.
patent: 5109771 (1992-05-01), Lewis et al.
patent: 5165345 (1992-11-01), Lewis et al.

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